Nuclear shapes from spectroscopic studies of fission fragments [electronic resource]
Partial level schemes for several neutron-rich Ba and Ce nuclei have been determined from the study of gamma-gamma coincidences in ²⁵²Cf fission fragments. The experiment was performed with the Argonne-Notre Dame gamma ray facility, which consisted of 7 Compton- suppressed Ge detectors, a low-energy...
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Format: | Government Document Electronic eBook |
Language: | English |
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Argonne, Ill. : Oak Ridge, Tenn. :
Argonne National Lab ; distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy,
1989.
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MARC
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245 | 0 | 0 | |a Nuclear shapes from spectroscopic studies of fission fragments |h [electronic resource] |
260 | |a Argonne, Ill. : |b Argonne National Lab ; |a Oak Ridge, Tenn. : |b distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, |c 1989. | ||
300 | |a Pages: 6 : |b digital, PDF file. | ||
336 | |a text |b txt |2 rdacontent. | ||
337 | |a computer |b c |2 rdamedia. | ||
338 | |a online resource |b cr |2 rdacarrier. | ||
500 | |a Published through the Information Bridge: DOE Scientific and Technical Information. | ||
500 | |a 01/01/1989. | ||
500 | |a "conf-890406-1" | ||
500 | |a "DE89000597" | ||
500 | |a Fifty years with nuclear fission conference, Gaithersburg, MD, USA, 25 Apr 1989. | ||
500 | |a Phillips, W.R.; Holzmann, R.; Janssens, R.V.F.; Khoo, T.L.; Ahmad, I.; Drigert, M.W.; Emling, H. | ||
520 | 3 | |a Partial level schemes for several neutron-rich Ba and Ce nuclei have been determined from the study of gamma-gamma coincidences in ²⁵²Cf fission fragments. The experiment was performed with the Argonne-Notre Dame gamma ray facility, which consisted of 7 Compton- suppressed Ge detectors, a low-energy photon spectrometer and an inner ball of fourteen hexagonal BGO detectors. Gamma-gamma coincidence events between the Ge detectors, which were accompanied by a gamma in BGO detectors, were accepted. The triple coincidence requirement eliminated most of the beta-decay background. Transitions in individual Ba and Ce nuclei were identified by gating on the known 2⁺ ..-->.. O⁺ gamma rays. Level schemes deduced from these studies indicate interleaved negative and positive parity levels in ¹⁴⁴Ba, ¹⁴⁶Ba and ¹⁴⁶Ce which are connected by fast E1 transitions. Both these features are signature of octupole deformation (reflection asymmetric shape) and are reproduced by recent theoretical calculations. 4 refs., 1 fig., 1 tab. | |
536 | |b W-31109-ENG-38. | ||
650 | 7 | |a Beta Decay Radioisotopes. |2 local. | |
650 | 7 | |a Heavy Nuclei. |2 local. | |
650 | 7 | |a Barium Isotopes. |2 local. | |
650 | 7 | |a Alkaline Earth Isotopes. |2 local. | |
650 | 7 | |a Deformation. |2 local. | |
650 | 7 | |a Beta-minus Decay Radioisotopes. |2 local. | |
650 | 7 | |a Even-even Nuclei. |2 local. | |
650 | 7 | |a Fission Fragments. |2 local. | |
650 | 7 | |a Actinide Isotopes. |2 local. | |
650 | 7 | |a Millisec Living Radioisotopes. |2 local. | |
650 | 7 | |a Isotopes. |2 local. | |
650 | 7 | |a Nuclear Deformation. |2 local. | |
650 | 7 | |a Mean-field Theory. |2 local. | |
650 | 7 | |a Barium 144. |2 local. | |
650 | 7 | |a Barium 142. |2 local. | |
650 | 7 | |a Intermediate Mass Nuclei. |2 local. | |
650 | 7 | |a Nuclear Fragments. |2 local. | |
650 | 7 | |a Alkali Metal Isotopes. |2 local. | |
650 | 7 | |a Californium Isotopes. |2 local. | |
650 | 7 | |a Odd-odd Nuclei. |2 local. | |
650 | 7 | |a Cesium 146. |2 local. | |
650 | 7 | |a Cesium Isotopes. |2 local. | |
650 | 7 | |a Minutes Living Radioisotopes. |2 local. | |
650 | 7 | |a Californium 252. |2 local. | |
650 | 7 | |a Nuclear Structure. |2 local. | |
650 | 7 | |a Actinide Nuclei. |2 local. | |
650 | 7 | |a Seconds Living Radioisotopes. |2 local. | |
650 | 7 | |a Alpha Decay Radioisotopes. |2 local. | |
650 | 7 | |a Nuclei. |2 local. | |
650 | 7 | |a Years Living Radioisotopes. |2 local. | |
650 | 7 | |a Radioisotopes. |2 local. | |
650 | 7 | |a Nuclear Physics And Radiation Physics. |2 edbsc. | |
710 | 2 | |a Argonne National Laboratory. |4 res. | |
710 | 1 | |a United States. |b Department of Energy. |b Office of Scientific and Technical Information. |4 dst. | |
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